CN213899713U - Inverted shock absorber with buffering function - Google Patents

Abstract

The utility model relates to an inversion formula bumper shock absorber with buffer function. In particular to a monotube shock absorber for a motor vehicle. It includes outer cylinder, shock attenuation post and spring. The shock absorption column is a cylinder, the inner end of the shock absorption column extends into the inner end of the outer cylinder barrel in a sealing and sliding mode, and the outer end of the shock absorption column and the outer end of the outer cylinder barrel are respectively connected with a lower joint and an upper end enclosure. A damping cylinder is arranged in the shock absorption column. A piston is arranged in the damping cylinder and is used for forming an air cavity and an oil cavity on two sides of the piston respectively. A piston rod is arranged between the damping cylinder and the upper end enclosure, one end of the piston rod is connected with the upper end enclosure, and the other end of the piston rod is connected with the piston. The outer section of the piston rod is sleeved with a top pipe, and the longitudinal middle of the top pipe is provided with a baffle ring. The method is characterized in that: the inner end of the damping cylinder is provided with a buffer sleeve. Two ends of the spring are respectively propped against the baffle ring and the buffer sleeve. A buffer plug is fixed on the piston rod between the buffer sleeve and the inner end of the top pipe, and a gap is reserved between the buffer plug and the buffer sleeve after the buffer plug enters the buffer sleeve. The shock absorber has low maintenance rate and good driving comfort and safety. Is suitable for motorcycles.

Description

Inverted shock absorber with buffering function

Technical Field

The utility model relates to a shock absorber. In particular to a monotube shock absorber for a motor vehicle. It is especially suitable for damping motorcycle.

Background

At present, shock absorbers used on motor vehicles such as automobiles, motorcycles and the like are all traditional inflatable shock absorbers. The inflatable shock absorber comprises an outer cylinder barrel, a shock absorbing column and a spring. The shock absorption column is a cylinder, the inner end of the shock absorption column extends into the inner end of the outer cylinder barrel in a sealing and sliding mode, and the outer end of the shock absorption column and the outer end of the outer cylinder barrel are respectively provided with a lower joint and an upper end enclosure. The damping column is internally provided with a damping cylinder and a distance is reserved between the damping cylinder and the damping cylinder. The length of the damping cylinder is shorter than that of the shock absorption column, a piston is arranged in the damping cylinder and used for forming an air cavity between the piston and the lower joint, and an oil cavity is formed between the piston and the upper joint. The outer end of the damping cylinder is connected with the lower joint. A piston rod is arranged between the damping cylinder and the upper end enclosure, one end of the piston rod is connected with the upper end enclosure, and the other end of the piston rod penetrates through a sealing cover at the inner end of the damping cylinder and then is connected with the piston. The outer section of the piston rod is sleeved with a top pipe, the outer end of the top pipe is connected with the upper end socket, the inner end of the top pipe is provided with a stopper, and the outer circle of the stopper is in movable fit with the inner circle of the shock absorption column. And two ends of the spring are respectively abutted against the stop head and the lower joint. In addition, in order to relieve the impact force between the inner end of the shock absorption column and the upper end enclosure, a rubber buffer pad is arranged in the upper end enclosure and used for reducing the impact force between the inner end of the shock absorption column and the upper end enclosure when the motorcycle encounters an uneven road section in the driving process. Because the rubber buffer cushion is adopted to relieve the impact force between the inner end of the shock absorption column and the upper end enclosure, the rubber buffer cushion is easy to damage after a long time. Once the rubber buffer cushion is damaged, the rubber buffer cushion needs to be replaced, so that the maintenance rate is high. And because the rubber buffer cushion has limited thickness, the impact force can be directly transmitted to the upper sealing head after the inner end of the shock absorption column collides with the shock absorption column, so that the driving comfort and safety can be greatly reduced.

SUMMERY OF THE UTILITY MODEL

The to-be-solved problem of the utility model is to provide an inversion formula bumper shock absorber with buffer function. The shock absorber has low maintenance rate and can improve the driving comfort and safety.

The utility model discloses the above-mentioned problem that solves is realized by following technical scheme:

the invention relates to an inverted shock absorber with a buffering function, which comprises an outer cylinder barrel, a shock absorbing column and a spring. The shock absorption column is a cylinder, the inner end of the shock absorption column extends into the inner end of the outer cylinder barrel in a sealing and sliding mode, and the outer end of the shock absorption column and the outer end of the outer cylinder barrel are respectively provided with a lower joint and an upper end enclosure. The damping column is internally provided with a damping cylinder and a distance is reserved between the damping cylinder and the damping cylinder. The length of the damping cylinder is shorter than that of the shock absorption column, a piston is arranged in the damping cylinder and used for forming an air cavity between the piston and the lower joint, and an oil cavity is formed between the piston and the upper joint. The outer end of the damping cylinder is connected with the lower joint. A piston rod is arranged between the damping cylinder and the upper end enclosure, one end of the piston rod is connected with the upper end enclosure, and the other end of the piston rod penetrates through a sealing cover at the inner end of the damping cylinder and then is connected with the piston. The outer section of the piston rod is sleeved with a top pipe, the outer end of the top pipe is connected with the upper end enclosure, and a retaining ring is arranged on the excircle in the longitudinal middle of the top pipe. The method is characterized in that: the inner end of the damping cylinder is connected with a buffer sleeve, the excircle of the buffer sleeve is movably matched with the inner wall of the shock absorption column, and a space is reserved between the inner circle of the buffer sleeve and the excircle of the piston rod. And two ends of the spring are respectively abutted against the stop ring and the buffer sleeve. A buffer plug is fixed on the piston rod between the buffer sleeve and the inner end of the top pipe, the buffer plug is a round sleeve, and the outer diameter of the buffer plug is smaller than the inner diameter of the buffer sleeve, so that a gap is reserved between the buffer plug and the buffer sleeve after the buffer plug enters the buffer sleeve.

The caliber of one end of the buffer sleeve, which is adjacent to the buffer plug, is conical with a large outer part and a small inner part; correspondingly, one end of the buffer plug adjacent to the buffer sleeve is conical with a small outer part and a large inner part.

According to the scheme, the buffer sleeve is connected to the inner end of the damping cylinder, the buffer plug is fixed on the piston rod between the buffer sleeve and the inner end of the jacking pipe, the buffer plug is a round sleeve, and the outer diameter of the buffer plug is smaller than the inner diameter of the buffer sleeve, so that a gap is reserved between the buffer plug and the buffer sleeve after the buffer plug enters the buffer sleeve. When the motorcycle encounters an uneven road section and has large impact force in the driving process, the buffer plug positioned in the oil cavity can move to the buffer sleeve and enter the buffer sleeve. At the moment, after being extruded, the hydraulic oil in the buffer sleeve can slowly overflow from the gap between the buffer plug and the buffer sleeve, so that the impact force is relieved. Compared with the prior art, the impact force and the maintenance rate are reduced, and the driving comfort and the driving safety are improved

Drawings

Fig. 1 is a schematic view of an inverted shock absorber having a damping function according to the present invention.

Detailed Description

As shown in fig. 1, the inverted shock absorber with buffering function of the present invention includes an outer cylinder 4, a shock absorbing column 11 and a spring 3. The shock absorption column 11 is a cylinder, the inner end of the shock absorption column hermetically and slidably extends into the inner end of the outer cylinder barrel 4, and the outer end of the shock absorption column and the outer end of the outer cylinder barrel 4 are respectively provided with a lower joint 9 and an upper end enclosure 1. The damping column 11 is internally provided with a damping cylinder 8 and a distance is reserved between the damping cylinder and the damping cylinder. The damping cylinder 8 is shorter than the shock-absorbing column 11 in length, and a piston 12 is provided therein for forming an air chamber 10 between the piston 12 and the lower head 9, and an oil chamber 6 is formed between the piston 12 and the upper head 1. The outer end of the damping cylinder 8 is connected with a lower joint 9. A piston rod 2 is arranged between the damping cylinder 8 and the upper sealing head 1, one end of the piston rod is connected with the upper sealing head 1, and the other end of the piston rod penetrates through a sealing cover at the inner end of the damping cylinder 8 and then is connected with the piston 12. The outer section of the piston rod 2 is sleeved with a top pipe 5, the outer end of the top pipe 5 is connected with the upper seal head 1, and a retaining ring 14 is fixed on the excircle of the longitudinal middle of the top pipe. The inner end of the damping cylinder 8 is connected with a buffer sleeve 7, the excircle of the buffer sleeve 7 is movably matched with the inner wall of the shock absorption column 11, and a space is reserved between the inner circle of the buffer sleeve and the excircle of the piston rod 2. Two ends of the spring 3 are respectively propped against the stop ring 14 and the buffer sleeve 7. A buffer plug 13 is fixed on the piston rod 2 between the buffer sleeve 7 and the inner end of the top pipe 5. The buffer plug 13 is a round sleeve, and the outer diameter of the buffer plug is smaller than the inner diameter of the buffer sleeve 7, so that a gap is reserved between the buffer plug 13 and the buffer sleeve 7 after the buffer plug enters the buffer sleeve 7. The caliber of one end of the buffer sleeve 7, which is adjacent to the buffer plug 13, is conical with a large outer part and a small inner part. Correspondingly, one end of the buffer plug 13 adjacent to the buffer sleeve 7 is conical with a small outside and a large inside.

When the motorcycle encounters a rough road section with a large impact force during running, the buffer plug 13 located in the oil cavity 6 moves toward the buffer sleeve 7 and enters the buffer sleeve 7. At this time, the hydraulic oil in the cushion collar 7 is extruded and then slowly overflows from the gap between the cushion plug 13 and the cushion collar 7, so that the impact force is relieved.

Claims (2)

1. The inverted shock absorber with the buffering function comprises an outer cylinder barrel (4), a shock absorbing column (11) and a spring (3); the damping column (11) is a cylinder, the inner end of the damping column hermetically and slidably extends into the inner end of the outer cylinder barrel (4), and the outer end of the damping column and the outer end of the outer cylinder barrel (4) are respectively provided with a lower joint (9) and an upper end enclosure (1); a damping cylinder (8) is arranged in the shock absorption column (11) and a distance is reserved between the damping cylinder and the damping cylinder; the length of the damping cylinder (8) is shorter than that of the shock absorption column (11), a piston (12) is arranged in the damping cylinder, so that an air cavity (10) is formed between the piston (12) and the lower joint (9), and an oil cavity (6) is formed between the piston (12) and the upper joint (1); the outer end of the damping cylinder (8) is connected with the lower joint (9); a piston rod (2) is arranged between the damping cylinder (8) and the upper sealing head (1), one end of the piston rod is connected with the upper sealing head (1), and the other end of the piston rod passes through a sealing cover at the inner end of the damping cylinder (8) and then is connected with the piston (12); a top pipe (5) is sleeved on the outer section of the piston rod (2), the outer end of the top pipe (5) is connected with the upper seal head (1), and a retaining ring (14) is arranged on the excircle in the longitudinal middle of the top pipe; the method is characterized in that: the inner end of the damping cylinder (8) is connected with a buffer sleeve (7), the excircle of the buffer sleeve (7) is movably matched with the inner wall of the shock absorption column (11), and a space is reserved between the inner circle of the buffer sleeve and the excircle of the piston rod (2); two ends of the spring (3) are respectively abutted against the baffle ring (14) and the buffer sleeve (7); a buffer plug (13) is fixed on the piston rod (2) between the buffer sleeve (7) and the inner end of the top pipe (5), the buffer plug (13) is a round sleeve, and the outer diameter of the buffer plug is smaller than the inner diameter of the buffer sleeve, so that a gap is reserved between the buffer plug (13) and the buffer sleeve (7) after the buffer plug enters the buffer sleeve (7).

2. The inverted shock absorber with a buffering function as set forth in claim 1, wherein: the caliber of one end of the buffer sleeve (7) adjacent to the buffer plug (13) is conical with a large outer part and a small inner part; correspondingly, one end of the buffer plug (13) adjacent to the buffer sleeve (7) is conical with a small outside and a large inside.

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